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Method and device for determining delay of audio

a delay and audio technology, applied in the field of audio processing technologies, can solve the problems of unsatisfactory delay compensation effect and poor anti-noise performance, and achieve the effects of improving delay compensation effect, improving calculation precision, and alleviating dual sound phenomenon

Active Publication Date: 2019-05-09
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Benefits of technology

The patent text describes a solution for extracting fingerprint characteristics from music and recorded audio, and using them to improve the delay compensation effect. This improves the precision of calculating the delay compensation duration, reducing the dual sound phenomenon.

Problems solved by technology

Although a delay can be reduced by using the method to some extent, anti-noise performance is relatively poor.
Consequently, a predicted delay value is not accurate, causing an unsatisfactory delay compensation effect.

Method used

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  • Method and device for determining delay of audio
  • Method and device for determining delay of audio
  • Method and device for determining delay of audio

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Embodiment Construction

[0015]Embodiments of this application provide a recording delay estimation method and device, applied to the field of audio processing technologies, for example, scenarios such as online karaoke, real-time online broadcasting of a broadcasting station, and real-time karaoke in a KTV, to improve estimation precision of delay compensation duration, thereby correspondingly improving a delay compensation effect, and alleviating a dual sound phenomenon.

[0016]The following clearly describes the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. The described embodiments are only some but not all of the embodiments of this application. All other embodiments obtained by a person skilled in the technology based on the embodiments of this application shall fall within the protection scope of this application.

[0017]In the specification, claims, and accompanying drawings of this application, the terms “f...

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Abstract

A method of determining an audio delay and a corresponding device are provided. The first audio data and second audio data are obtained. A first sub-fingerprint sequence of the first audio data and a second sub-fingerprint sequence of the second audio data is extracted. The first sub-fingerprint sequence includes at least one first sub-fingerprint and the second sub-fingerprint sequence includes at least one second sub-fingerprint. Processing circuitry determines similarity coefficients corresponding to similarities between the first sub-fingerprint sequence and the second sub-fingerprint sequence. The processing circuitry determines a matching level between the first sub-fingerprint sequence and the second sub-fingerprint sequence according to the similarity coefficients. The processing circuitry determines, according to the matching level, a delay of the second audio data relative to the first audio data. The method and device can improve calculation precision, thereby correspondingly improving a delay compensation effect, and alleviating a dual sound phenomenon.

Description

RELATED APPLICATION[0001]This application is a continuation of International Application No. PCT / CN2017 / 093798, filed on Jul. 21, 2017, which claims priority to Chinese Patent Application No. 201610617671.1, filed with the Chinese Patent Office on Jul. 29, 2016 and entitled “AUDIO DELAY ESTIMATION METHOD AND TERMINAL DEVICE”, which are incorporated by reference in their entirety.FIELD OF THE TECHNOLOGY[0002]This application relates to the field of audio processing technologies, and in particular, to an audio delay determining method and device.BACKGROUND OF THE DISCLOSURE[0003]In a karaoke process, at a host end, an accompaniment is played while singing sounds of the host are captured. Audio recorded in a karaoke device includes the singing sounds of the host and the played accompaniment. The captured singing sounds and the accompaniment need to be combined by using the karaoke device, to obtain final singing audio. When the karaoke device is used to combine the singing sounds and t...

Claims

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Application Information

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IPC IPC(8): G06F3/16G10L19/018G10L25/51
CPCG06F3/165G10L19/018G10L25/51H04R3/00G10H1/361G10H2240/325G10L25/48G11B27/10G10H1/10
Inventor KONG, LINGCHENG
Owner TENCENT TECH (SHENZHEN) CO LTD